Serial Port LEDs
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Serial Port LEDs
Each serial port has a Port LED that describes port activity. Table 4-2 describes the various
Port LED states.
Port LED Condition Meaning
Off
Port is closed or no power.
Solid Green
Port is open, but idle
Blinking Green
Port is open, and data is being transmitted or received. When data is
being continuously transferred, this LED will blink approximately 2
times per second.
Red Blinks
Data errors will cause periodic red blinks. Persistent red blinks may
imply a configuration problem (incorrect baud rate, parity settings,
etc.)
Solid Red
Port hardware has failed
Table 4-2: Port LED Conditions
Ethernet LEDs
Each Ethernet port has one LED that describes the state of the network connection on that
port. Table 4-3 describes the various Ethernet LED states.
Ethernet LED Condition
Meaning
Solid Green
Ethernet link is good
Green Blink
Network traffic was detected
Off
The Ethernet cable is bad or not connected
Table 4-3: Ethernet LED Condition
